FAQ

Is there an ipad or iphone version of OpenCPN?

OpenCPN runs with many OS including Android, Linux (many flavors), Windows & MacOS.
OpenCPN will never work directly with iphone because the iphone store limits production of a version of OpenCPN.
OpenCPN can use the Javascript Plugin and Shadow OpenCPN with devices running iNavX
OpenCPN can be used on an iphone with VNC, see Ipad VNC.
- Use a small Linux computer like Raspberry Pi 3 running Openplotter.
- Then use a VNC viewer in full screen mode on an iPhone or iPad to view the RPi screen over Wi-Fi.
- Put OpenCPN on the RPi and you effectively have OpenCPN on an iThing.
- You can get the RPi for <$50 US.
- Screenshot of VNC with an iPad or iPhone

When will OpenCPN be ported to Android?

- There are two versions in the Google Play Store. We suggest you will be happiest with the paid version created by D. Register because it is updated regularly and is current. There is a forum at http://bigdumboat.com/aocpn/forum/ .

Many error messages when starting OpenCPN from Linux command line.

Messages like: * “ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5)” or * “(opencpn:8979): Gdk-CRITICAL : IA_gdk_drawable_get_size: assertion `GDK_IS_DRAWABLE (drawable)' failed” * '(opencpn:8979): Gdk-CRITICAL : IA_gdk_drawable_get_depth: assertion `GDK_IS_DRAWABLE (drawable)' failed Error opening coefficient file“ * ”(opencpn:8979): Gdk-CRITICAL : IA_gdk_window_get_origin: assertion `GDK_IS_WINDOW (window)' failed“ are quite normal and have nothing to do with OpenCPN. Just ignore them!